Self-powered microfluidic devices, methods and systems

A self-powered microfluidic device comprising:

• an arrangement of microfluidic channels wherein one or more reagents are adapted to flow;
• and
• a pressure source to pump the reagents through the microfluidic channels, the pressure source comprising:
• a reservoir containing a substance adapted to generate a pressure-generating reaction product;
• a trigger, associated with the reservoir, adapted to react with the substance to produce the pressure-generating reaction product;
• wherein the trigger comprises a pin, and wherein the pin contains a catalyst to generate the reaction product,
• a buffer chamber in fluid communication with the reservoir, adapted to host the substance upon production of the pressure-generating reaction product, wherein the fluid communication between the buffer chamber and the reservoir is a channel;
• and
• a reagent chamber containing the one or more reagents, the chamber connected between the pressure source and the arrangement of microfluidic channels.